In boreal forests, nitrogen supply is a limiting factor for plant growth. Fertilizing with nitrogen can double tree biomass, but may interfere with ecosystem functionality, changing plant species composition and soil microbial communities. The research in my group targets nitrogen effects on ecophysiological mechanisms driving nitrogen-induced ecosystem changes. The aim is to increase our knowledge of both positive and negative effects of nitrogen enrichment on important ecosystem services, such as productivity, carbon sequestration, nitrogen retention and biodiversity. Ultimately, we seek ways to wisely manage nitrogen use in forest ecosystems.

Nordin Annika 1150In particular I am interested in how competition for nitrogen between trees of different sizes and of different species structures forest ecosystems.The aim is to develop management measures in continuous cover forestry and in mixed species forestry, e.g. managing forests by managing the distribution of nitrogen. In addition, I study flux and storage of nitrogen and carbon between the different compartments in forest ecosystems, i.e. trees, field-layer vegetation, bottom-layer vegetation and soil biota.The aim is to increase our understanding of ecosystem stoichiometry in relation to the nitrogen availability
nordin_1 nordin_2
Forest field-layer dominated by Vaccinium myrtillus L Vaccinium myrtillus diseased by a fungal leaf pathogen (Valdensia heterodoxa).

Survey of the species composition of forest floor vegetation
Additionally, for the period 2010 – 2016 I am the program director of the Future Forests research program. Future Forests is the largest investment ever in applied forestry research in Sweden.The overarching objective of the program's interdis- ciplinary research is to identify scientifically-based strategies that can optimise benefits from the forest for the sustainable society of the future.
sweden_greySvensk sammanfattning

Publication list

  1. Capturing complexity: Forests, decision-making and climate change mitigation action
  2. Growth and survival relationships of 71 tree species with nitrogen and sulfur deposition across the conterminous U.S.
    PLoS One. 2018, 13(10):e0205296
  3. Understanding context dependency in the response of forest understorey plant communities to nitrogen deposition
    Environ Pollut. 2018, 242:1787-1799
  4. Nutrient optimization of tree growth alters structure and function of boreal soil food webs
  5. Carbon balance in production forestry in relation to rotation length
  6. Interplay between N-form and N-dose influences ecosystem effects of N addition to boreal forest
    PLANT AND SOIL 2018, 423 (1-2):385-395
  7. Trade-offs in the multi-use potential of managed boreal forests
    JOURNAL OF APPLIED ECOLOGY 2018, 55(2):958-966
  8. Modified forest rotation lengths: Long-term effects on landscape-scale habitat availability for specialized species
  9. Forest future s by Swedish students - developing a mind mapping method for data collection
  10. Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
    Sci Rep. 2017, 7(1):4083
  11. The potential role of forest management in Swedish scenarios towards climate neutrality by mid century
  12. Impacts of global climate change mitigation scenarios on forests and harvesting in Sweden
    CANADIAN JOURNAL OF FOREST RESEARCH 2016, 46 (12):1427-1438
  13. Chronic Nitrogen Deposition Has a Minor Effect on the Quantity and Quality of Aboveground Litter in a Boreal Forest
    PLoS One. 2016 Aug 31;11(8):e0162086 eCollection 2016
  14. Socio-ecological implications of modifying rotation lengths in forestry
    Ambio. 2016;45 Suppl 2:109-23
  15. The role of biogeochemical hotspots, landscape heterogeneity, and hydrological connectivity for minimizing forestry effects on water quality
    Ambio. 2016;45 Suppl 2:152-62
  16. Nitrogen dynamics in managed boreal forests: Recent advances and future research directions
    Ambio. 2016;45 Suppl 2:175-87
  17. Comparison of carbon balances between continuous-cover and clear-cut forestry in Sweden
    Ambio. 2016;45 Suppl 2:203-13
  18. Anthropogenic nitrogen deposition enhances carbon sequestration in boreal soils
    GLOBAL CHANGE BIOLOGY 2015, 21(8):3169-3180
  19. Residual Long-Term Effects of Forest Fertilization on Tree Growth and Nitrogen Turnover in Boreal Forest
    FORESTS, 2015,6(4):1145-1156
  20. Relative contributions of set-asides and tree retention to the long-term availability of key forest biodiversity structures at the landscape scale
    J Environ Manage. 2015 Mar 4;154C:284-292 [Epub ahead of print]
  21. Nitrogen-retention capacity in a fertilized forest after clear-cutting - the effect of forest-floor vegetation
  22. Belowground Competition Directs Spatial Patterns of Seedling Growth in Boreal Pine Forests in Fennoscandia
    FORESTS 2014, 5(9):2106-2121
  23. Serum metabolomic biomarkers of dementia
    Dement Geriatr Cogn Dis Extra. 2014, 4(2):252-62
  24. Potential Roles of Swedish Forestry in the Context of Climate Change Mitigation
    FORESTS, 2014; 5(4):557-578
  25. Can thinning alleviate negative effects of fertilization on boreal forest floor vegetation?
    FOREST ECOLOGY AND MANAGEMENT, 2014; 310:382-392
  26. The impact of simulated chronic nitrogen deposition on the biomass and N₂-fixation activity of two boreal feather moss-cyanobacteria associations
    Biol Lett. 2013; 9(6):20130797
  27. Does background nitrogen deposition affect the response of boreal vegetation to fertilization?
    Oecologia. 2013 Oct;173(2):615-24

  28. Anthropogenic nitrogen deposition in boreal forests has a minor impact on the global carbon cycle
    Glob Chang Biol. 2013 ; 20(1):276-286
  29. Strengbom J, Nordin A
    Physical disturbance determines effects from nitrogen addition on ground vegetation in boreal coniferous forests
    JOURNAL OF VEGETATION SCIENCE 2012 23(2)2 361-371
  30. Gundale MJ, Deluca TH, Nordin A
    Bryophytes attenuate anthropogenic nitrogen inputs in boreal forests
    Global Change Biology: 2011 17:2743-2753
  31. Hedwall PO, Brunet J, Nordin A, Bergh J
    Decreased variation of forest understory vegetation is an effect of fertilisation in young stands of Picea abies
    Scandinavian Journal of Forest Research: 2011 26:46-55
  32. Cambui CA, Svennerstam H, Gruffman L, Nordin A, Ganeteg U, Näsholm T
    Patterns of plant biomass partitioning depend on nitrogen source
    PLoS one: 2011 6:e19211
  33. Johansson O, Nordin A, Olofsson J, Palmqvist K
    Responses of epiphytic lichens to an experimental whole-tree nitrogen-deposition gradient
    New Phytologist: 2010 188:1075-1084
  34. Hedwall PO, Nordin A, Brunet J, Bergh J
    Compositional changes of forest-floor vegetation in young stands of Norway spruce as an effect of repeated fertilisation
    Forest Ecology and Management: 2010 259:2418-2425
  35. Bobbink R, Hicks K, Galloway J, Spranger T, Alkemade R, Ashmore M, Bustamante M, Cinderby S, Davidson E, Dentener F, Emmett B, Erisman J-W, Fenn M, Gilliam F, Nordin A, De Vries W
    Global assessment of nitrogen deposition effects on terrestrial plant diversity: a synthesis
    Ecological Applications: 2010 20: 30-59
  36. Ishida TA, Nordin A
    No evidence that nitrogen enrichment affect fungal communities of Vaccinium roots in two contrasting boreal forest types
    Soil Biology & Biochemistry: 2010 42:234-243
  37. Nordin A, Strengbom J, Forsum A, Ericson L
    Complex biotic interactions drive long-term vegetation change in a nitrogen enriched boreal forest
    Ecosystems: 2009 12:1204-1211
  38. Wiedermann MM, Gunnarsson U, Nilsson MB, Nordin A, Ericson L
    Can small scale experiments predict ecosystem responses? An example from peatlands
    Oikos: 2008, 118(3):449-456
  39. Wiedermann MM, Gunnarsson U, Ericsson L, Nordin A
    Ecophysiological adjustment of two Sphagnum species in response to anthropogenic N deposition
    New Phytologist: 2009 181:208-217
  40. Strengbom J, Nordin A
    Commercial forest fertilization cause long-term residual effects in ground vegetation of boreal forests
    Forest, Ecology & Management: 2008 256:2175-2181
  41. Forsum Å, Laudon H, Nordin A
    Nitrogen uptake by Hylocomium splendens during snowmelt in a boreal forest
    Ecoscience: 2008 15(3):315-319
  42. Wiedermann MM, Nordin A, Gunnarsson U, Nilsson MB, Ericson L
    Global change shifts vegetation and plant-parasite interactions in a boreal mire.
    Ecology: 2007 88: 454-464
  43. Forsum A, Dahlman L, Nasholm T, Nordin A
    Nitrogen utilization by Hylocomium splendens in a boreal forest fertilization experiment
    Functional Ecology: 2006 20:421-426
  44. Nordin A, Strengbom J, Ericson L
    Responses to ammonium and nitrate additions by boreal plants and their natural enemies
    Environmental Pollution: 2006 141:167-174
  45. Strengbom J, Witzell J, Nordin A, Ericson L
    Do multitrophic interactions override N fertilization effects on Operophtera larvae?
    Oecologia: 2005 143:241-250
  46. Nordin A, Strengbom J, Witzell J, Nasholm T, Ericson L
    Nitrogen deposition and the biodiversity of boreal forests: Implications for the nitrogen critical load
    Ambio: 2005 34:20-24
  47. Nordin A, Schmidt IK, Shaver GR
    Nitrogen uptake by arctic soil microbes and plants in relation to soil nitrogen supply
    Ecology: 2004 85:955-962
  48. Schmidt IK, Jonasson S, Shaver GR, Michelsen A, Nordin A
    Mineralization and distribution of nutrients in plants and microbes in four arctic ecosystems: responses to warming
    Plant and Soil: 2002 242:93-106
  49. Strengbom J, Nordin A, Nasholm T, Ericson L
    Parasitic fungus mediates change in nitrogen-exposed boreal forest vegetation
    Journal of Ecology: 2002 90:61-67
  50. Nordin A, Uggla C, Nasholm T
    Nitrogen forms in bark, wood and foliage of nitrogen-fertilized Pinus sylvestris
    Tree Physiology: 2001 21:59-64
  51. Strengbom J, Nordin A, Nasholm T, Ericson L
    Slow recovery of boreal forest ecosystem following decreased nitrogen input
    Functional Ecology: 2001 15:451-457
  52. Nordin A, Hogberg P, Nasholm T
    Soil nitrogen form and plant nitrogen uptake along a boreal forest productivity gradient
    Oecologia: 2001 129:125-132
  53. Nordin A, Gunnarsson U
    Amino acid accumulation and growth of Sphagnum under different levels of N deposition
    Ecoscience: 2000 7:474-480
  54. Nasholm T, Ekblad A, Nordin A, Giesler R, Hogberg M, Hogberg P
    Boreal forest plants take up organic nitrogen
    Nature: 1998 392:914-916
  55. Eriksson HM, Nilsson T, Nordin A
    Early effects of lime and hardened and non-hardened ashes on pH and electrical conductivity of the forest floor, and relations to some ash and lime qualities.
    Scandinavian Journal of Forest Research: 1998 56-66
  56. Nordin A, Nasholm T, Ericson L
    Effects of simulated N deposition on understorey vegetation of a boreal coniferous forest
    Functional Ecology: 1998 12:691-699
  57. Nasholm T, Nordin A, Edfast AB, Hogberg P
    Identification of coniferous forests with incipient nitrogen saturation through analysis of arginine and nitrogen-15 abundance of trees
    Journal of Environmental Quality: 1997 26:302-309
  58. Nordin A, Nasholm T
    Nitrogen storage forms in nine boreal understorey plant species
    Oecologia: 1997 110:487-492
  59. Ohlson M, Nordin A, Nasholm T
    Accumulation of Amino-Acids in Forest Plants in Relation to Ecological Amplitude and Nitrogen Supply
    Functional Ecology: 1995 9:596-605